题目
题型:解答题难度:一般来源:不详
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答案
当x=2时,原式=-
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当x=-2时,原式=-
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核心考点
举一反三
(1)12+(-8)+11+(-2)+(-12);
(2)
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18 |
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6 |
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(3)(-1)3×(-5)÷[-32+(-2)2].
A.100÷
| B.100÷
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C.100÷
| D.100÷
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(1)(-7)-9-(-3)+(-5);
(2)(-
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(3)-24×(-
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(4)(-2)÷
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(5)-14+8÷(-2)2-(-4)×(-3);
(6)-19
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9 |